题目

The police had to employ force ______________ the crowd got out of control.A. the instant B. at the instantC. in an instant D. for an instant 答案：【答案】A【解析】考查状语从句。句意：当人群失控的时候，警方立刻部署警力。A. the instant一……就（引导时间状语从句）；B. at the instant一看见（副词短语）；C. in an instant立刻，马上（副词短语）；D. for an instant一会儿（副词短语）。分析句子可知，the crowd got out of control为状语从句，故用连接副词 . In Beijing Olympics, Michael Phelps (迈克尔.菲尔普斯) swam into Olympic history, ____ the first athlete ____ the most gold medals ever.  A. became; to win         B. becoming; winning C. becoming; to win       D. to become; to win